A constitutive model for metals applicable at high-strain rate

A constitutive model for metals applicable at high-strain rate

A model, applicable at high-strain rate, is presented for the shear modulus and yield strength as functions of equivalent plastic strain, pressure, and internal energy (temperature). The parameters needed to implement the model have been determined for 14 metals. Using this model, hydrodynamic compu...

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Veröffentlicht in:J. Appl. Phys.; (United States) 1980-03, Vol.51 (3), p.1498-1504
Hauptverfasser: Steinberg, D. J., Cochran, S. G., Guinan, M. W.
Format: Artikel
Sprache:eng
Schlagworte:
360103 - Metals & Alloys- Mechanical Properties
COMPUTERIZED SIMULATION
DATA
ELEMENTS
HYDRODYNAMIC MODEL
INFORMATION
MATERIALS SCIENCE
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
PARTICLE MODELS
PLASTICITY
SHEAR
SHOCK WAVES
SIMULATION
STATISTICAL MODELS
STRAINS
STRUCTURAL MODELS
THERMODYNAMIC MODEL
TIME DEPENDENCE
VELOCITY
YIELD STRENGTH
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Beschreibung
Zusammenfassung:A model, applicable at high-strain rate, is presented for the shear modulus and yield strength as functions of equivalent plastic strain, pressure, and internal energy (temperature). The parameters needed to implement the model have been determined for 14 metals. Using this model, hydrodynamic computer simulations have been successful in reproducing measured stress and free-surface-velocity–vs–time data for a number of shock-wave experiments.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.327799